@misc{indiciaebd0a8bb7d5e2, title = {Logical limits of randomized controlled trials.}, author = {J W Sleigh}, year = {1997}, doi = {10.1046/j.1365-2753.1997.00068.x}, url = {https://pubmed.ncbi.nlm.nih.gov/9276590/}, note = {Source identifier: 9276590} }